Stapling-machine.



E. T. GREENFIELD. Y

- STAPUNG MACHINE.

APPLICATION FILED MAY 14, I915.

' 1,217,749. Patented Feb. 22,1917.

45 ta] line 2 EDWIN T: GREENFIELD. F KIAMESHA, nnvvrome.

STAPLING-MACHINE.

Specification of Letters Patent.

. Application filed May 14, 1915. Serialitc 9%;991.

72 all whom it may concern."

Be it known that l, EDWIN T. Gunny run, a citizen'of the United States. and resident of Kiamesha, county of Sullivan,

5 and State of New York, have invented a new and useful Stapling-lllachine, of which the following is a specification.

My invention is directed particularly to improvements in stapling-niacl'liues of the type disclosed in United States Letters Patent No. 572,293 and No. 936,996, granted to me on the 1st of December, 1896, and 12th of October, 1909, respectively, in which sta pics are successively cut from ablank or 15 strip of completed staples and driven through papers or material to be bound together.

The object of this invention is to provide a simple and compact machine in which the last staple of the strip can be fed forward intothe machine in a manner to avoid a tendency to clog due to the last staple, or

in fact any ing its downward, movement. The machine is also preferably constructed so that the last staple can be fed by hand into a position Where it can be driven and also so that the last staple can be removed by hand from the machine, if desired.

My machine is also preferably constructed sons to use the staple blank or strip covered by the invention shown, described and claimed in United States Letters Patent No. 1,106,938, granted to me on the llth oi August, 191%.

As showing certain specific embodiments of my invention reference is made to the drawing -forming a part of this specification and in which drawing,

Figure l is a side elevation ofmy stapling machine. the upper portion of the plunger and its retracting spring being broken away.

Fig". 2 is a horizontal sectional view taken. as along the no indicated by the horizonransvcrse vertical view taken plane udicated by the line or Fig. 4, looking in the direction it the arrows in each instance.

Fig. l is a front or end elevation of the stapling machine.

Fig. 5 is a vertical sectional view showing the strip of staples supported. in place on its scale than other staple, being turned dur- 1., looking in the direction v-.,iPatented Feb. 2?, l @1 7.

uide-way ready for one staple to be severed rom the rest of the strip by the plunger. located above it.

Fig. 6 is a front view of the members constituting the guide-way and in this figure astrip of staples is indicated in place on the guide-way.

Fig. 7 is a horizontal transverse View taken as on the line 7-7 of Fig. 5.

Fig. 8 is a horizontal transverse view. taken as on the line 88, Fig. 5. Figs. 5 to 8 inclusive show the parts on a larger thev corresponding parts are in the restof the figures of the shown drawing.

Fig. 9 shows a modified form of stapling machine in Whichthere is an automatic feeding of all staples, except the last staple, to the position where each staple in the strip can successively be sheared and driven.

Referring now to the drawing in detail in which like characters of reference rep-. resent like parts Wherever used, A represents the base of the machine to which there is pivoted by means of the pin 0: the frame or support B of the staple severing and diving apparatus. The base A is preferably made of pressed sheet metal and is provided with upstanding ears a a between which the frame or support Bv swings. These upstanding cars a are integral with the rest of the material in the base and are formed by cutting the metal in the base and subsequently bending the ears upwardly. The base is also provided with a pair of recesses or clenching surfaces X X which are located below the plunger the latter of which will he hereinafter more specifically described. These clenching surfaces are arranged and shaped so as to give an inward V inclination to the free ends of the staple as they are driven forward through the parts or materials to be secured by it. This baseserves as an anvil to oppose the thrust imparted to the staple by means of the plunger, and as the base also cooperates me with the plunger to clench the free ends of the staple upon the "under side of the material to be bound or secured, the base may he referred to as a clenching anvil.

The pivoted frame or swinging support ll also made of pressed sheet metal, prefahly steel, and it comprises two main leaves or parts 5 7). These main leaves have a:

portion hontlatorally at r r so as to proride a sot of ways for roooiring and guiding the rortioal morahlo plnngor t. tho t'unot-ion of whioh plungror is to soror a staplo from tho strip. driro tho sovorod staplo through tho inatorial until tho onds ot tho staplo oome in oontaot with tho inolinod taros of tho clonohing surt'aoos X X in tho anvil and to oontinuo to l'oroo tho taplo do\\'n\\'ardl until tho innor t'aoos of tho doponding" logs of tho staplo ong'ago tho undor fat-o of tho inatorial whioh is to ho soourod h tho staplta 'lhoso olonohing surlaoos aro prot'orahly arrangod so that tho t'roo onds of tho dopondint! logs aro hont toward oaoh othor as tho) aro torood to tho position whoro tho ongago tho undor sido ot the matorial to ho scoured.

A shoarhlado I) is proridod hotwoon tho main loavos or parts I; I" and this shoar hlado ooiiporatos with tho lowor portion ol tho plungor in sovorin; tho staplo dosirod to bo drirou. 'lho front ond portions of tho lotnos aro slottod at ll to provido a roroiring: :paoo for tho staplo blank or strip 5.

As it is dosirahlo. to use a staplo hlanlt in which the logs of tho individual staplos will remain in parallol position rolativo to oaoh othor, that is. without hoing hont out of thoirnormal position up to tho time that they aro sororod hr tho driving plungor, l proforahly uso. tho staplo hlank or strip shown in l'nitod Statos l ottors latont No. 1,106.63): that is. a staplo hlank o strip providod with a plnrality'ot' intogrally oonnootod staplos and having: a longitudinallv oorrugatod woh or haolt. ln tho staplo shown tho corrugation oxtonds downwardly in tho dirootion (it tho logs of the staples and in ordor that tho staplo strip ma ho oontrallv looatod whon in tho maohino tho shoal hlado I) has hoon proridod with a longitudinally oxlonding groorod portion 1/ and tho l'raiuo has also hoon providod with a doponding rih 7/". 'lho groorod portion roooivos tho nndor portion a of tho staplo strip H \vhilo tho rih l) ontors tho grrooro s in tho oorrugatod woh ot tho staplo strip. and from an inspootion of Fig. 6 it will ho ohsorvod that tho lowor portion of tho rih I)" oxtonds holow tho top surt'aoo of tho staple strip.

ln tho z-onstruotion shown tho rih 7/" is tho-lowor portion of a. monihor l whioh is insortod hotwoon tho loaros or hut it will ho inanil'ost that this rih 7/" could ho mado intogral with or romain a part of one or hoth ot' tho loaros or parts I) and I').

From an inspootion of the drawing, and also from what has procodod. it will ho apparent that tho shoar blade D and the portions Y Y of tho loaf momhors I and I) provido a staplo-supporting guido-way that oxtonds longitudinally. This gnidoway is of substantially the same configuparts I) 7/.

AXE-11343315 COPY ration as the staples omprisotlin a staple blank and tho staplos in this hlank straddle tho guide-way momhor. as it may he called.

Tho main loaros or parts I) and I1 dirootly ongag oa'rh othor and aro oonnoctod to- ;zothor I spot-woldiug. as at w, 'w", 10" andsaid loaros or parts aro. furthormore also indirootly soourod i hoth hoing spotwoldod to tho momhor l at f; f". and by ho'mg spot-woldod to tho shoal hlado l at l/' 1/". ln othor words. tho swinging llulliO B is a slottod oonstruotion with all tho parts thoroot porxmmontly woldod togothor whon tho t'raino is ooiuplotozl. 'lho horizontally ottonding guidoway monihor has so ourod thoroto. at opposito sidos thoroot. a pair ol springs whioh sorro tho 't'unotion of pi\otod holding or ohoolting pawlz-s. Tho e .\l)l'lll l.\ rostrain tho staplo strip or hlanl; l'roln inovoinont away from tho path of tho plung'or or. in othol' words awa) from shoalin position. nnloss tho springs aro t'orood toward oaoh othor in a manuor to l'roo tho stiip. l'hoso spring ar" dosignatod h) tho roioronoo olmraotors (l and ll and tho lroo onds y and l: lhorool aro lm-atoil so as to oio gago tho doponding logs ot' a staplo about; to ho driron. so as to proront th lattor t'r m hoooniina' rrampod or turnod in snoh a way as to log tho outlot 0 ol tho maohino and thus provont tho llltltlilllt tI'HlH oporating.

'lho springs ti and ll aro shapod so that tho staplo hlanlts ran ho t'od oithor by hand or h moohanisin uoh as is shown in Fig. J--in position tor a staplo to ho shoarod or drivon. 'lho spring ll has also pro idod thor iu n what :nar ho nsidorod a sot-0nd holding; or ohooltin; pawl and thi so 'ond ohoolting paol ongagos tho siaplo \Yllit'll is noxt to tho staplo roady t ho driron whoio h tho staplo st rip or lil:till{ will ho ro ainod in plaoo on tho guido-way oltho maohino. This su'ul-ltl holdin or Nnooltin; pawl sorros: tho tunotion ot' a spring-prossod pirotod holding and rhoolting pawl. 'lho staplo t rip. honoYol'. van roadily ho roinorod wnon dosirod lo snnultanooiL-dy prossiog tho thumh nail against tho. springs or pawls at ono sido of tho horizontal gllido-w'aw' Inomhor and l prossing tho spring or pawl at tho othor sido of tho horizontal guido-way momhq'r with tho nail ot ono of tho tingors. Whon this is dono tho tlosh of tho thumh and tingor will ongag tho s aplo strip with. suitioiontt'oroo to oli'ort tho withdrawal of tho staplo strip At this tinio tho withdrawal ot tho trip oan talto plaoo as tho t'roo onds 1/. ii and 71 of tho springs or pawls will ho all romorod l'rom tho position whoro tho ongago tho doponding logs of tho strip. 'l'ho froo onds :1. l! and I! of thosprings or pawls aro normally spring-prossod latorally our wardly to a position whoro tlsov oan ongag'o' or whoro thoy oan ho ongzag d hy tho dopo-nding logs of tho staplos in tho strip, and

'llO

In position to be from what has preceded it will be manifest these ends are pressed laterally inwardly when it is d8SlI(l 'tO remove the strip of staples by hand.

The forward portions of the members that provide the vertically extending guides way for the plungerv are cut away adjacent to the free ends of the springs G and H sufficient to permit the last staple of a strip to be forced forward by hand past the free ends g and It of the springs (l and ll.

The construction shown in Fig. i) is similar to that described heretofore in connection with the constructimi shown in Figs. to 8, but in the construction shown in Fig. i) a bell crank feeding lever L is provided between the leaves 6 and 71 for automatically feeding a strip so that a staple will be ready to be Severed and driven each time the plunger assumes its raised position.

From an inspection of Fig. 9 of the drawing, it will be observed that the lug c" on the plunger engages the projections Z Z on the bell crank lever each time the plunger is raised and lowered so that as the plunger is raised and lowered the lower end of the bell crank lever automatically moves toward and from the plunger. This bell crank lever has secured to the lower portion thereof a spring or pawl M which is arranged to engage the staples in the staple strip in a manner to force the staple strip toward the vertically extending guide-Way portion as the plunger assumes its raised position. This spring or pawl M is of such shape and has suliicient flexibility therein to permit it to slide over is being held against movement away from the path of the plunger by the spring or pawl ll which serves as a stop member.

As previously indicated, the stapling machine shown in connectionwith Figs. lto

8 is entirely hand fed, while in the stapling machine shownin Fig. 9 there is an automatic feeding'to riving position of all staples, except the last staple of the strip. An individual staple, as the last staple of a strip. will not drop through the outlet even when placed in position to be driven under the plunger, but will remain hanging on the shear blade until forced downwardly by the plunger. The staple which is located driven hangs on the shear blade due to an extension or projection, on the central part'of the staple resting onthe endof the shear blade. It will be noted that the action of the springs or pawls G and H also prevents the tipping of the staple which is thus hanging on the end of the blade. From what has preceded it will be ma'nifest that the last staple of a staple strip or blank can be driven in-amachine embodying' the invention herein described. It will also be manifest from what'has preceded the staple, strip, while the latter 'tally extending v staple strip when the latter is in the slotted which is located AVAILABL that this last staple can be placed in position to be driven by hand and that it will reso as to pre- 'lhe plunger (7 is preferably made of a piece oi bar metal and a projection or boss Z: is formed thereupon as by stamping. The plunger is also provided with a stamped handle or hand engaging portion 11 which is preferably welded to the the'piece made of bar metal. The plunger is hold in elevated or retracted position by the coiled compression spring l. The up- ,ward movement of the plunger is limited by the stop or projection gaging the pin WlllClYPZISSQS through the leaves 7) and-l It will be manifest that if desired the function of the pin 7 could be performed by a stop or projection formed of the leaves I), 7/. All of the main parts of the stapling machine are preferably made of stamped sheet steel and when the machine is made'in the manner hereinbefore described there strong construction.

he improvements herein set forth are not limited to the precise construction and upper end of it thereupon en- UPOH one is provided a light, simple and arrangement shown and described, they may beembodied in various forms and modifications without departing rom the spirit and scope of the invention.

What i claim is:

'1. A stapling machine having a base, a frame member pivotally mounted upon the base, and a driving plunger slidable in a vertically extending guide-way in the frame member, said frame member being provided with a shear blade which arranged to cooperate with said plunger, said frame memher also having a slotted'portion for receivbig a strip of staples, the shear bladeand a part of said frame constituting a horizon guide-way member for the portion of the frame, the guide-way memher having secured thereupon a pawl having. an end located adjacent to the path of movement of the plunger and in a position to prevent a turning of the staple under plunger by engagement with a depend leg of said staple, the machine also havingfa second pawl or stop for engaging the staple I next to the staple that :1s under the plunger, the free erlds of eachof BEST AVAILABLE copv said pawls being movable laterally outwardly to staple engaging position.

2. A stapling machine embracing a staple supporting guide-way, a staple severing and staple driving plunger, and meansfor holding the staple blanlt or strip from movement away from the path of movement of the plunger, said means comprising pawls having the free ends thereof arranged adjacent to the path of movement'ot the plunger and in a position so as to move laterally outwardly so as to engage or to be engaged by the depending legs of the staple which is in position to be sheared and driven by the plunger; said means also comprising air other pawl the free end oi" which is arranged t move laterally outwardly so as to engage or so as to be engaged by a depending leg of the staple which is next to the. staple to be driven.

3. A. stapling marhine embracing an anvil, a staple supporting guideway member which extends horizontally, a staple severing and staple driving plunger, a f 'ame. provid ing a vertically extending guideway for the plunger, and springs secured to the staple supporting guide a member, which springs are so constructed and located that the staples in a strip of staples can pass over the springs toward the path of the plunger but the movement of a staple from its position in the path of the plunger will be prevented by the engagement of the free ends of the springs with the depending legs of said staples, said springs being arranged so that their free ends are movable laterally toward and from the. staple guidewa v member, the

frame being cut away adjacent to the staple supporting guidevajv member so that the la? staple oi the strip can be positioned by hand in the path of the. plunger.

-I. it via iing machine. en'ibraeing therein a "Frame inn ng a vertically extending guideway nwmber. a horizontally extending staple .iill l fllltlllg guideway member, and a staple severing and staple driving plunger mounted in the vertically extending guidew-xay member; said trame also having located upon ti opposite sides of the. staple sup- :idewuiv member a pair of hori- 1 r m... .ng springs or pa'wls the free ezn. v vvhirh are located adjacent to the para os z:r.-=- =nent oi": the vertical reciproeating which free ends are also located so to prevent the turning of a staple which in driving position below the plunger by ment with the depending legs of the aple. the frame ot the machine being .way adjacent to the delivery end of the vertically extending guide way in such manner that the last staple of a strip ran be inserted in driving position below the plunger by band; the machine also being constructed so that when lateral pressure is applied to said spring pawls the staple strip which is on the guide-way member can be removed as desired.

5. i\- stapling marhine having a base, a frame member movably mounted upon the base. and a driving plunger, the frame member having a vertieally extending guidewav. in which guide-way the plunger slides,

said frame member being provided with a shear blade which is arranged to coiipe ate with said plunger. said frame member also having a slotted portion for receiving a strip of staples. the shear blade and a part of said frame together providing a horizonb v engagement with :1 depending leg of said staple. the machine also having a second pawl or stop for engaging the staple which is located next to the staple which is under the plunger. the second pawl or stop also being secured to said guide-way member and being so located as to engage between the. dependin legs of the second staple mentioned above and the staple. next succeeding in the staple strip when the latter is in place upon the horizontally extending, guide-way member.

G. A stapling machine emb'acing an auvil. astaple supporting guide-way member, a staple severing and staple driving plunger. :1 frame providing a guide-way for said plunger. and springs secured to the staple sup 'xorting guide-way member, which springs are constructed and located so that the staples in the strip of staples can pass over the springs toward the path of the plunger and so that movement of the staple from its position in the path of the plunger will beprevenled by the frre ends of the springs engaging the depending legs of the staples, the frame providing the. guide-way for the plunger being cut away adjacent to the staple guide-way member so that the depending portions of the legs of the staple. can be engaged by the hand and can be positioned b v the hand in the path oi the ed in the vertically extending guide-way,'

said frame also having located on the opposite sides of the staple supporting guideway member a pair of horizontally extending pawls the free ends of which are located adjacent to the path of movement ofthe vertical-reciprocating plunger and which free ends tend to move laterally outwardly to a position "where they earn engz e the Stfl'lllQS and which ends are located so as to prevent the iurning o the staple which is below the plunger in position to be driven, the frame of the machine being cut away adjacent to the delivery end of the staple supporting guide-way member, the cut extending in such :1 manner that the depending portions oil the legs of: the last staple can be engaged by the hand and thereby the last staple can placed in. position to be driven .suid frame also having upon opposite sides of the staple supporting guide-way memher a pair of horizontally extending springs or pnwls the .irec ends of which are located adjacent to the path. of movement of the ver- -lical-reciprocoting plui'iger and over which free ends the staples pass while being moved to position where a staple can be driven by v the plunger said free ends being located so as to prevent the vturning of a staple 'h is below she plunger in a. position to driven, the frame of the machine being jueent to the vertically extendguidewsy and along the sides of the horizontally extending supporting guideway member in such a manner that the last staple of a strip can be inserted by hand in driving position below the plunger, the machine also being constructed so that the nails of the fingers can apply pressure to the springs or pawls whereby the staple strip which is on the guide-way can be re moved as desired.

' 9. A staple machine comprising in combination an anvil, e staplesupporting guideway member, a frame providing a guideway for a plunger, a, staple severing and staple driving plunger slidnble in said guide-way in the frame, and pawls secured to the staple supporting guide-way member which pawls are constructed and located so that the staples in a strip of staples can pass over the free endsthereof toward the path of the plunger but so that movement of a staple from its position in the path of the plunger will be prevented by the free ends of said pawls engagin the do; pendnig staple logs, said pawls being arranged so um the ends thereof are movable laterally toward and from the staple sup porting guide-way member, said frame being cut; away adjacent to the staple supporting guide-way member so that the last staple of the strip can be positioned by hand in the path of the plunger.

This specification signed and witnessed this 12th day of May, A. D. 1915.

EDl VIN T. GREENFIELD. Signed in the presence of- (l. MCGRANN, EDWIN A. PACKARD. 

